The hum of your heating system as it starts its cycle as usual is, of course, nothing to be alarmed about. You know the normal noises your heating system makes, which means you know when something is off. Typically, a sound from your heating system may not mean that your system is in any immediate danger, but it often still means you should call in technicians ASAP.
Want to know what those noises really mean? Check out our guide to some common sounds below, but be sure to reach out to your local technicians for boiler or furnace repair the moment you notice a problem!